dpmiller

a fused spur outlet would be the job, if you can get one that matches

Very easy to change the max speed on the CoolEnergy units.

Is the settling period long enough? If the airlift is known good then it can only be taking liquor at the correct height/ depth. I'd say either it isn't settling for long enough or something is stopping it from settling. This could be biological perhaps

I'd say all the "cheaper" ones have simple contact-closure inputs and only need their own controller for flow setpoint etc. Heck some even have that controller on the outdoor unit. All @Beelbeebub needs to do is man up and order a containerload of his choice direct from the chinaman and presto! 30 cheap and easy heatpumps...

Say you've never worked with an oil boiler without saying it. Nozzles block. With particulates, with varnish (inside and outside), with... water. The orifice size you're talking about here is tiny- smaller than a human hair sized- and it doesn't take much. Only 7bar doesn't help... Manufacturers don't need to mandate replacement as the engineer should know both by visual inspection and combustion analyser readings what the jet's like. Most just opt for annual replacement as a tenner on a nozzle saves callbacks... Again hoses are a liability thing. Do you want to deal with the aftermath of 1000 litres of oil in your kitchen/ founds/ back garden? Any kinks or rusting to the braid, or UV damage to a rubber outer, and I'll change it. Moreso if the user is dabbling in WVO/ bio-D/ sump oil mixes as all are more harmful to the rubber.

can you not just put the U6 Pro or a cheapo wifi extender in the hallway that'll shoot through the front door to the doorbell and squeeze a wee bit of a signal through the wall for the camera? Any sockets on that outside wall, just inside the doorway?

The issue isn't manufacturing cost, it's price gouging en-route to the UK.

It won't. Not measurably.

@jon-leewho are you designing this for? Is it for yourself or a (paying) client?

Are you a business?

ummm, the Mainsboost is a 200l vessel? I'm guessing they're just being more conservative about the life of the diaphragm. edit: also the *system* has a rating of 3.5bar uplift, so the end volume is variable. The other tank is just talking about it's full capacity I'd think.

it's not rocket science, what are you having a problem with?

I looked at these a couple of years back see https://www.stelrad.com/wp-content/uploads/2014/09/21351_Vita-Eco_Web.pdf

are the panes the same brand?

jig? vice? whaddya need that for...

If you can build a house, you can certainly take the ten minutes it takes to run a file over a chain. Perfection aint necessary- even if you're just taking the burrs off rather than sharpening as such it'll still improve things...

question is, are there thermal or solar differences too...

https://www.ebay.co.uk/itm/285164579131

Why does a shed need bi-folds and a cavity?

If you want a pretty direct replacement and aren't concerned about superb thermal properties, look at the Velux VLT or GVK or Fakro WGI, you should find a similar size in those ranges

It's a bit of a 1st World problem really, but I'd agree with @Dave Jones on this, else you'll see it every day.

not all compression fittings have a BSP on the nut, I think they're actually Whit. But more modern stuff could well be metric even, that could be M30x2.5 or somesuch.

can you get a piccy of the threads, and measure the thread pitch?

pack it up off the tiles a touch (toughened glass doesn't like point loads)either with glazing packers or the special clear packers that "disappear" into the sealant. If you use ordinary packers you can remove them and fill the voids once the main length has gone off.

heck I'd love to get an extra 30%. Are the panels actually bigger, are you able to get more in closer to the edges, or has someone told you that on-roof is less affected by heat please?